Steam-engine.



W. H. SULLIVAN, DEG'D. A. s. cuss, ADMINISTB'ATRIX. STEAM ENGINE.

APPLIOATION FILED JULY 10, 1912.

1,081,787. Patented Dec. 16, 1913.

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1E STATS PATENT FFIQ.

WILLIAM H. SULLIVAN Y DECEASED, BY ALICE SULLIVAN CHASE, ADMINISTRATRIX, OF KANSAS CITY, MISSOURI, ASSIGNOR OF ONE-HALF TO E. P. CI-IACE, 0F SHAWNEE,

KANSAS.

STEAM-ENGINE.

Registered Dec. 16,1913.

' Application filed July 10,1912. Serial No. 708,565.:

To all whom z'tmay concern:

Be it known that I, Anion SULLIVAN CHASE, (administratrixof the estate of l/VIL- LIAM H. Somnvam) a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, hereby apply for a patent for certain new and useful Improvements inSteam-Engines, invented by said WILLIAM H. SULLIVAN, of which the following is a specification.

This invention relatesto. steam engines of the reciprocatory piston type having. oscillatory valves adapted to alternately establish communication between. opposite ends of the cylinder and the atmosphere, and has for its object to produce a valve mechanism of simple, strong, durable and inexpensive construction whereby to utilize the volume of steam with the greatest efiiciency.

To this end the inventionconsists in certain novel and peculiar features of construction and organization as hereinafter described and claimed; and in order that it may be clearly understood reference is to be had to the accompanying drawings, in whieh:-

Figure 1, is a vertical, central longitudinal section of a partof a steamengine, embodying the invention. Fig. 2 is a plan. view of the same, with the steam chest and valve omitted. Fig. 3, is a vertical section on the line III-III of Fig. 2. Fig. 4:, is a perspective view of the valve.

In the said drawings, where like reference characters identify corresponding parts in all the figures, 1 is the cylinder of an ordinary engine of the reciprocatory piston type and 2 and 3 are the ports for alternately conducting steam into and from the cylinder.

4 and 5 are supply and exhaust ports respectively, the former communicating with a threaded passage 6 with which a steam supply pipe, not shown, is adapted to be connected. The exhaust port 5 is preferably provided with a pair of branch passages 7 extending obliquely to the longitudinal axis of the cylinder to avoid interference with the exhaust of an adjacent cylinder if more than one cylinder should be used.

8 is a hemispherical steam chest secured upon the cylinder around the upper ends of ports 2 to 5 inclusive, and said chest is provided centrally with an upwardly-projecting tubular stem 9, and engaging said stem is a hollow nut 10 for clamping packing l1 firmly against the upper end of the stem or gland 9.

12 is a hollow hemispherical valve fitting in the chest and upon the cylinder, the hollow side or chamber of the valve being provided witlra diametric partition 13 dividing said chamber into a receiving chamber 14- and a discl'iarging chamber 15, and the wall of the valve is provided with an orifice l6 establishing comnuinication between chamber 14 and the interior of the chest above the valve for admitting steam thereto from the port 4, as shown clearly in Fig. 3. The valve is adapted for oscillation around its center or axis upon a cylindrical pin 17 projecting upward from the cylinder into a socket 18 in the middle of the partition 13. Iii-line with said pin, the valve is provided with a stem 19 which projects up through thestcm 9 of the chest, and is equipped at its upper end with a crank arm 20 for con nection with any suitable means (not shown) actuated by the engine, for oscillating said arm and valve about the vertical axis of the stem 19. To hold the valve pressed yieldingly downward as steam first enters its chamber 14 from the port 1:, a helical spring 21 encircles the stem 19 in position to press downward upon the valve and upward against the stem 19.

22 indicates the piston in the cylinder and 23 the stem thereof.

In practice as the piston attains the position shown in Fig. 1, the valve is standing in the position shown by dotted lines, Fig. 2, in which position it will be noticed supply chamber 1 1 is in communication with the supply port 4t and port 2 of the cylinder, and that chamber 15 is in communication with port 3 of the cylinder and the exhaust port 5 thereof, it being understood that the valve stands in the position described during the travel of the piston from port 2 to port 3, and that as such stroke ends, the crank arm 20 is oscillated to oscillate the valve to the position shown by the heavy dotted lines in Fig. 2 so as to close communication between chamber 1 1- and port 2 and between chamber .15 and port 3, and open communication betwcen chamber 141; and port 3 and chauber 15 and port 2. As the valve is thus positioned the steam supplied continuously to chamber 14"., is cut oil from port 2 and enters port 3 and starts the piston on its reverse stroke, and the exhaust steam is cylinder having also a supply port and an forced by the piston through port 2 into exhaust port adjacent said first ports and chamber and thence escapes by way of at opposite sides of said pin, the outer marexhaust port 5. It will thus be seen that as gins of all said ports lying within a circle the piston stroke in each direction ends, the about said pin as a center, said valve being valve is oscillated to divert the passage of provided with a pair of chambers, one for steam from one end of the cylinder to the connecting the supply port with either of other. said first pair of ports and the other for It will be understood that the valve is a connecting the exhaust port with the other 10 balanced valve owing to the fact that steam of said first pair of ports which at the time from chamber 14, passes through the orifice is not in communication with the supply 16 into the chest above the valve and thus port. holds the latter balanced, the spring 21 t0- 2. In a steam engine, a cylinder having gether with the weight of the valve, holda pair of steam passages leading to its op- 5G 15 ing the same with sufficient pressure upon posite ends, said passages having ports the cylinder to guard against leakage 0t through the side walls of the cylinder, said steam at the lower end of the valve. cylinder also having a supply port and an From the above description it will be apexhaust port adjacent said first ports, said parent that a steam engine has been proexhaust port having branch passages ex- 20 duced embodying the features of advantage tending obliquely to the longitudinal axis of enumerated as desirable in the statement of the cylinder, and a steam chest inclosing the object oi the invention and which may said ports, and having a valve provided with be modified in minor particulars without de a pair of chambers one for connecting the parting from the spirit and scope of the supply port with either of said first pair of invention as defined in the appended claims. ports and the other for connecting the ex- 1 claim: haust port with the other of said first pair 1. In a steam engine, a cylinder having a of ports which at the time is not in compair of steam passages leading to its opmunication with the supply port.

posits ends, said passages having ports In testimony whereof I a'lfix my signature, 30 through the side wall of the cylinder, said in the presence or" two witnesses.

)orts bein located on a line extending T lengthwise of the cylinder a pivot pin seat- ALICE SULLIVAE CHASE ed in the cylinder wall between said ports, Admim'simrfriw. and a steam chest secured to the cylinder i l itnesses: OJ over said ports and having a hemispherical M. K. PRESTON,

valve rotatable therein upon said pin, said G. Y. THoRrE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

